Patent US2777024A successfully refreshed from Google Patents.
Patent US2881141A successfully refreshed from Google Patents.
US2881141A
Expired / Lapsed
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Method of producing a cellular structure from a plasticized vinyl ester resin.
Assignee: Union Carbide Corp
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Filing: 1954-03-08
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Granted: 1959-04-07
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 J Smythe William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:25
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0033; B; B29; B29B; B29B7/00; B29B7/74; B29B7/7404; B29B7/7409; B29B7/7419; C08J9/04; C08J9/12; C08J9/30; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A METHOD OF PRODUCING A CELLULAR STRUCTURE IN A POLYMERIZED MATERIAL FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE DISPERSED IN SUFFICIENT PLASTICIZER TO PROVIDE A FREE FLOWING MASS, IN WHICH THE PLASTICIZED MATERIAL IS SUBJECTED TO AN INERT GAS UNDER PRESSURE AND IS THEREBY IMPREGNATED WITH GAS, THE STEP WHICH CONSISTS OF DISCHARGING THE GAS IMPREGNATED RESIN THROUGH SUCH AN ORIFICE AT A GAS PRESSURE SUFFICIENT TO CAUSE SAID RESIN TO ISSUE FROM THE ORIFICE IN THE FORM OF SMALL, INDIVIDUAL, SEPARATED, DROPLETS, WHICH WHEN SUBSEQUENTLY COLLECTED TOGETHER FORM A CREAMY, EXPANDED FOAM OF SUBSTANTIALLY UNIFORM CELLULAR STRUCTURE FROM WHICH UNABSORBED GAS HAS BEEN DISSIPATED AT THE POINT OF DISCHARGE.
Claim 2
Dependent Claim
119 words
IN A METHOD OF PRODUCING A CELLULAR STRUCTURE IN A POLYMERIZED MATERIAL FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE DISPERSED IN SUFFICIENT PLASTICIZER TO PROVIDE A FREE FLOWING MASS, IN WHICH THE PLASTICIZED MATERIAL IS SUBJECTED TO AN INERT GAS UNDER PRESSURE AND IS THEREBY IMPREGNATED WITH GAS, THE STEP WHICH CONSISTS OF DISCHARGING THE GAS IMPREGNATED RESIN THROUGH SUCH AN ORIFICE AT A GAS PRESSURE SUFFICIENT TO CAUSE SAID RESIN TO ISSUE FROM THE ORIFICE IN THE FORM OF SMALL, INDIVIDUAL, SEPARATED, DROPLETS, WHICH WHEN SUBSEQUENTLY COLLECTED TOGETHER FORM A CREAMY, EXPANDED FOAM OF SUBSTANTIALLY UNIFORM CELLULAR STRUCTURE FROM WHICH UNABSORBED GAS HAS BEEN DISSIPATED AT THE POINT OF DISCHARGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |